Why do some objects make loud sounds when dropped, while others make quiet sounds?

Find out all about the different parts of the eyes and how they work together to make vision possible.

The periodic table of the elements is an important classification system of the most basic particles that make up our world!

Introduce your child to the inclined plane, one of the six simple machines that helps to make work easier for us!

Make a splash with this hands-on first, second, and third grade science worksheet about sound and underwater vibrations!

Did you know that the screw is actually one of the six simple machines? This handy machine helps to make work easier!

Ever wonder about how to make the perfect paper airplane? Learn about the four forces that affect flight with paper airplane physics!

Young inventors will have a blast with this worksheet on compound machines! Use three of the six machines together to make work easier.

Glass is everywhere, but have you ever wondered where it all came from? It doesn't grow anywhere -- we have to make it!

This Thanksgiving, serve up some Thanksgiving science learning and find out all about the chemicals that make up a typical Thanksgiving meal.

Atoms are some of the tiniest particles that make up our world. Give kids some perspective with this worksheet that shows kids just how small atoms are.

Light can do amazing things, but nothing else brings out its crazy capabilities like the prism. Learn about the dazzling prism and make one of your own.

Have your little chemist think about the properties, or characteristics, of metals. What makes them different than non-metals?

Create your own gravity-powered roller coaster in this creative worksheet!

Get a brief history of the atom with this introductory page for young physicists!

Have you ever wondered why manhole covers are round? It's a good thing to know -- big companies sometimes ask that question in interviews.

Here is a brief introduction to The Great Pacific Garbage Patch for kids!

Need a colorful way to impress your friends and family? This worksheet has got you covered!

Crank out a better understanding of simple machines with this worksheet all about the wheel and axle!

Meet the master of compound machines: Rube Goldberg! His wacky contraptions put a whole new spin on the use of simple machines.

Learn all about the science of the movies and the basic concepts behind how they work.

What is the water cycle? We're glad you asked! Learn about this amazing natural system that's been working for billions of years.

It's a paper parachute brigade! Learn how to build your own parachute, and learn how the parachute was invented over 500 years ago.

Learn how conductors and insulators affect the flow of electricity in this helpful fourth- and fifth-grade worksheet!

Use your detective skills to predict the motion of a seesaw in this third-grade worksheet!

Be a glow-getter with this energy transfer worksheet!

Put your prediction proficiency to the test in this third-grade physical science worksheet!

Explore particle behavior with this foundational physical science worksheet!

Take a science-filled trip to an amusement park in this third- and fourth-grade worksheet!